Is hydra and water flea same
How will we grow a hydra
We can grow hydro by feeding them on water flea
What could happen if water flea is kept in chlorinated water? How do you know that dechlorinated water is required?
@GN. If the water flea is kept in chlorinated water then it wouldn’t get the required bacteria and microorganisms to eat as chlorinated water is pure and does not contain any microorganisms. That is why we need to keep it in chlorinated water for it to eat and survive
Does hydra eat anything other than water flea?
Can we design an experiment to confirm your explanation?
APARATUS 1
Materials required: 1bottles,de-chlorinated water,water flea,milk,dropper
Procedure: •We take a bottle and fill 500mil of it with de-chlorinated water.
•We take some water flea with the help of a dropper and add it to the bottle.
•we then add a few drops of milk and cap the bottle airtight
•we leave it undisturbed for a few hours.
OBSERVATIONS: •We observe that due to addition of milk more bacteria is produced which use up the oxygen present in water and since it’s airtight,air cannot move in and out of the bottle.
• Due to very less oxygen present white water flea turns red as the haemoglobin increases which has high affinity to oxygen.
MATERIALS REQUIRED: bottle, de-chlorinated water,water flea,dropper,cotton plug, aparatus1
Procedure:• We take the red water flea from aparatus1 and transfer them with the help of a dropper to another bottle with de-chlorinated water filled until 500ml.
•We ensure that the water is clean.
•We close the bottle with the help of a cotton plug to ensure supply of oxygen.
OBSERVATIONS: We observe that the red water flea turns back into its original colour ,i.e, white since there is enough supply of oxygen so the production of haemoglobin reduces.
RESULT: Water flea can thus be used as a bio indicator to observe the amount of oxygen in the atmosphere. It can also be used to study various human related diseases like cancer
Hydra eats insect larva and larval fish other than water flea
Hydra eats worms, insect larvae, small crustaceans, larval fish, and other invertebrates.
We can find worms in the soil and we can provide hydra with worms in water.
23.07.2019 . We will observe daphnia in water bottle
Today we will observe that the water flea is living or not
23/7/19
Today we will observe red water flea.
23/7/19
Has water flea reproduced or is it dead?
Also obtain red water flea
Long term objective: study of haemoglobin for gene regulation
23 July 2019
Objective- To observe in which bottle the water flea reproduced the most.
And to see that it would turn red or not
We will observe that water flea turns red or not